mirror of
https://github.com/qgis/QGIS.git
synced 2025-10-18 00:06:00 -04:00
258 lines
9.1 KiB
Python
258 lines
9.1 KiB
Python
# -*- coding: utf-8 -*-
|
|
|
|
"""
|
|
***************************************************************************
|
|
FieldsMappingWidget.py
|
|
---------------------
|
|
Date : October 2014
|
|
Copyright : (C) 2014 by Arnaud Morvan
|
|
Email : arnaud dot morvan at camptocamp dot com
|
|
***************************************************************************
|
|
* *
|
|
* This program is free software; you can redistribute it and/or modify *
|
|
* it under the terms of the GNU General Public License as published by *
|
|
* the Free Software Foundation; either version 2 of the License, or *
|
|
* (at your option) any later version. *
|
|
* *
|
|
***************************************************************************
|
|
"""
|
|
|
|
__author__ = 'Arnaud Morvan'
|
|
__date__ = 'October 2014'
|
|
__copyright__ = '(C) 2014, Arnaud Morvan'
|
|
|
|
import os
|
|
|
|
from qgis.PyQt import uic
|
|
from qgis.PyQt.QtCore import (
|
|
QItemSelectionModel,
|
|
QModelIndex,
|
|
pyqtSlot,
|
|
QCoreApplication,
|
|
QVariant,
|
|
)
|
|
|
|
from qgis.PyQt.QtWidgets import (
|
|
QComboBox,
|
|
QSpacerItem,
|
|
QMessageBox,
|
|
QWidget,
|
|
QVBoxLayout
|
|
)
|
|
|
|
from qgis.core import (
|
|
QgsApplication,
|
|
QgsMapLayerProxyModel,
|
|
QgsProcessingFeatureSourceDefinition,
|
|
QgsProcessingUtils,
|
|
QgsVectorLayer,
|
|
QgsField,
|
|
QgsFields,
|
|
)
|
|
|
|
from processing.gui.wrappers import WidgetWrapper, DIALOG_STANDARD, DIALOG_MODELER
|
|
from processing.tools import dataobjects
|
|
from processing.algs.qgis.FieldsMapper import FieldsMapper
|
|
|
|
|
|
pluginPath = os.path.dirname(__file__)
|
|
WIDGET, BASE = uic.loadUiType(
|
|
os.path.join(pluginPath, 'fieldsmappingpanelbase.ui'))
|
|
|
|
|
|
class FieldsMappingPanel(BASE, WIDGET):
|
|
|
|
def __init__(self, parent=None):
|
|
super(FieldsMappingPanel, self).__init__(parent)
|
|
self.setupUi(self)
|
|
|
|
self.addButton.setIcon(QgsApplication.getThemeIcon("/mActionNewAttribute.svg"))
|
|
self.deleteButton.setIcon(QgsApplication.getThemeIcon('/mActionDeleteAttribute.svg'))
|
|
self.upButton.setIcon(QgsApplication.getThemeIcon('/mActionArrowUp.svg'))
|
|
self.downButton.setIcon(QgsApplication.getThemeIcon('/mActionArrowDown.svg'))
|
|
self.resetButton.setIcon(QgsApplication.getThemeIcon('/mIconClearText.svg'))
|
|
|
|
self.configure()
|
|
|
|
self.layerCombo.setAllowEmptyLayer(True)
|
|
self.layerCombo.setFilters(QgsMapLayerProxyModel.VectorLayer)
|
|
self.dialogType = None
|
|
self.layer = None
|
|
|
|
def configure(self):
|
|
self.model = self.fieldsView.model()
|
|
self.fieldsView.setDestinationEditable(True)
|
|
|
|
def setLayer(self, layer):
|
|
if layer is None or self.layer == layer:
|
|
return
|
|
self.layer = layer
|
|
if self.model.rowCount(QModelIndex()) == 0:
|
|
self.on_resetButton_clicked()
|
|
return
|
|
dlg = QMessageBox(self)
|
|
dlg.setText(self.tr("Do you want to reset the field mapping?"))
|
|
dlg.setStandardButtons(
|
|
QMessageBox.StandardButtons(QMessageBox.Yes |
|
|
QMessageBox.No))
|
|
dlg.setDefaultButton(QMessageBox.No)
|
|
if dlg.exec_() == QMessageBox.Yes:
|
|
self.on_resetButton_clicked()
|
|
|
|
def value(self):
|
|
# Value is a dict with name, type, length, precision and expression
|
|
mapping = self.fieldsView.mapping()
|
|
results = []
|
|
for f in mapping:
|
|
results.append({
|
|
'name': f.field.name(),
|
|
'type': f.field.type(),
|
|
'length': f.field.length(),
|
|
'precision': f.field.precision(),
|
|
'expression': f.expression,
|
|
})
|
|
return results
|
|
|
|
def setValue(self, value):
|
|
if type(value) != dict:
|
|
return
|
|
destinationFields = QgsFields()
|
|
expressions = {}
|
|
for field_def in value:
|
|
f = QgsField(field_def.get('name'),
|
|
field_def.get('type', QVariant.Invalid),
|
|
field_def.get(QVariant.typeToName(field_def.get('type', QVariant.Invalid))),
|
|
field_def.get('length', 0),
|
|
field_def.get('precision', 0))
|
|
try:
|
|
expressions[f.name()] = field_def['expressions']
|
|
except AttributeError:
|
|
pass
|
|
destinationFields.append(f)
|
|
|
|
if len(destinationFields):
|
|
self.fieldsView.setDestinationFields(destinationFields, expressions)
|
|
|
|
@pyqtSlot(bool, name='on_addButton_clicked')
|
|
def on_addButton_clicked(self, checked=False):
|
|
rowCount = self.model.rowCount(QModelIndex())
|
|
self.model.appendField(QgsField('new_field'))
|
|
index = self.model.index(rowCount, 0)
|
|
self.fieldsView.selectionModel().select(
|
|
index,
|
|
QItemSelectionModel.SelectionFlags(
|
|
QItemSelectionModel.Clear |
|
|
QItemSelectionModel.Select |
|
|
QItemSelectionModel.Current |
|
|
QItemSelectionModel.Rows))
|
|
self.fieldsView.scrollTo(index)
|
|
|
|
@pyqtSlot(bool, name='on_deleteButton_clicked')
|
|
def on_deleteButton_clicked(self, checked=False):
|
|
self.fieldsView.removeSelectedFields()
|
|
|
|
@pyqtSlot(bool, name='on_upButton_clicked')
|
|
def on_upButton_clicked(self, checked=False):
|
|
self.fieldsView.moveSelectedFieldsUp()
|
|
|
|
@pyqtSlot(bool, name='on_downButton_clicked')
|
|
def on_downButton_clicked(self, checked=False):
|
|
self.fieldsView.moveSelectedFieldsDown()
|
|
|
|
@pyqtSlot(bool, name='on_resetButton_clicked')
|
|
def on_resetButton_clicked(self, checked=False):
|
|
"""Load fields from layer"""
|
|
if self.layer:
|
|
self.fieldsView.setDestinationFields(self.layer.fields())
|
|
self.fieldsView.setSourceFields(self.layer.fields())
|
|
|
|
@pyqtSlot(bool, name='on_loadLayerFieldsButton_clicked')
|
|
def on_loadLayerFieldsButton_clicked(self, checked=False):
|
|
layer = self.layerCombo.currentLayer()
|
|
if layer is None:
|
|
return
|
|
self.fieldsView.setSourceFields(layer.fields())
|
|
|
|
|
|
class FieldsMappingWidgetWrapper(WidgetWrapper):
|
|
|
|
def __init__(self, *args, **kwargs):
|
|
super(FieldsMappingWidgetWrapper, self).__init__(*args, **kwargs)
|
|
self._layer = None
|
|
|
|
def createPanel(self):
|
|
return FieldsMappingPanel()
|
|
|
|
def createWidget(self):
|
|
self.panel = self.createPanel()
|
|
self.panel.dialogType = self.dialogType
|
|
|
|
if self.dialogType == DIALOG_MODELER:
|
|
self.combobox = QComboBox()
|
|
self.combobox.addItem(QCoreApplication.translate('Processing', '[Preconfigure]'), None)
|
|
fieldsMappingInputs = self.dialog.getAvailableValuesOfType(FieldsMapper.ParameterFieldsMapping)
|
|
for input in fieldsMappingInputs:
|
|
self.combobox.addItem(self.dialog.resolveValueDescription(input), input)
|
|
|
|
def updatePanelEnabledState():
|
|
if self.combobox.currentData() is None:
|
|
self.panel.setEnabled(True)
|
|
else:
|
|
self.panel.setEnabled(False)
|
|
|
|
self.combobox.currentIndexChanged.connect(updatePanelEnabledState)
|
|
|
|
widget = QWidget()
|
|
widget.setLayout(QVBoxLayout())
|
|
widget.layout().addWidget(self.combobox)
|
|
widget.layout().addWidget(self.panel)
|
|
return widget
|
|
else:
|
|
return self.panel
|
|
|
|
def postInitialize(self, wrappers):
|
|
for wrapper in wrappers:
|
|
if wrapper.parameterDefinition().name() == self.parameterDefinition().parentLayerParameter():
|
|
if wrapper.parameterValue():
|
|
self.setLayer(wrapper.parameterValue())
|
|
wrapper.widgetValueHasChanged.connect(self.parentLayerChanged)
|
|
break
|
|
|
|
# remove exiting spacers to get FieldsMappingPanel fully expanded
|
|
if self.dialogType in (DIALOG_STANDARD, DIALOG_MODELER):
|
|
layout = self.widget.parent().layout()
|
|
spacer = layout.itemAt(layout.count() - 1)
|
|
if isinstance(spacer, QSpacerItem):
|
|
layout.removeItem(spacer)
|
|
|
|
def parentLayerChanged(self, layer=None):
|
|
self.setLayer(self.sender().value())
|
|
|
|
def setLayer(self, layer):
|
|
context = dataobjects.createContext()
|
|
if layer == self._layer:
|
|
return
|
|
if isinstance(layer, QgsProcessingFeatureSourceDefinition):
|
|
layer, ok = layer.source.valueAsString(context.expressionContext())
|
|
if isinstance(layer, str):
|
|
layer = QgsProcessingUtils.mapLayerFromString(layer, context)
|
|
if not isinstance(layer, QgsVectorLayer):
|
|
layer = None
|
|
self._layer = layer
|
|
self.panel.setLayer(self._layer)
|
|
|
|
def linkedVectorLayer(self):
|
|
return self._layer
|
|
|
|
def setValue(self, value):
|
|
self.panel.setValue(value)
|
|
|
|
def value(self):
|
|
if self.dialogType == DIALOG_MODELER:
|
|
if self.combobox.currentData() is None:
|
|
return self.panel.value()
|
|
else:
|
|
return self.comboValue(combobox=self.combobox)
|
|
else:
|
|
return self.panel.value()
|